================================================================== BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x26c/0x3338 fs/ext4/inode.c:4708 Read of size 8 at addr ffff00012c427ff0 by task syz-executor.5/8061 CPU: 1 PID: 8061 Comm: syz-executor.5 Not tainted 6.6.0-rc3-syzkaller-g2e530aeb342b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381 __ext4_iget+0x26c/0x3338 fs/ext4/inode.c:4708 ext4_quota_enable fs/ext4/super.c:7038 [inline] ext4_enable_quotas+0x45c/0x988 fs/ext4/super.c:7074 __ext4_fill_super fs/ext4/super.c:5568 [inline] ext4_fill_super+0x4db4/0x56ec fs/ext4/super.c:5703 get_tree_bdev+0x33c/0x4a8 fs/super.c:1577 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5735 vfs_get_tree+0x90/0x288 fs/super.c:1750 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335 path_mount+0x590/0xe04 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Allocated by task 7201: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x90/0x4a0 mm/slab.h:762 slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x194/0x394 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2868 [inline] alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0xe0/0x1d0 fs/inode.c:1004 new_inode+0x30/0x16c fs/inode.c:1030 debugfs_get_inode fs/debugfs/inode.c:72 [inline] __debugfs_create_file+0x13c/0x440 fs/debugfs/inode.c:429 debugfs_create_file+0x60/0x78 fs/debugfs/inode.c:486 mac80211_hwsim_new_radio+0x20a0/0x3dcc drivers/net/wireless/virtual/mac80211_hwsim.c:5321 hwsim_new_radio_nl+0xc1c/0x1b94 drivers/net/wireless/virtual/mac80211_hwsim.c:5983 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x854/0xb4c net/netlink/genetlink.c:1066 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 genl_rcv+0x38/0x50 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2541 ___sys_sendmsg net/socket.c:2595 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2624 __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2631 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x58/0x16c arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the object at ffff00012c4277b0 which belongs to the cache inode_cache of size 1168 The buggy address is located 944 bytes to the right of allocated 1168-byte region [ffff00012c4277b0, ffff00012c427c40) The buggy address belongs to the physical page: page:0000000014fe7929 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16c424 head:0000000014fe7929 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff0000d978d101 flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000840 ffff0000c185bb40 dead000000000122 0000000000000000 raw: 0000000000000000 00000000000c000c 00000001ffffffff ffff0000d978d101 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00012c427e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff00012c427f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff00012c427f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff00012c428000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00012c428080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Quota error (device loop5): v2_read_header: Failed header read: expected=8 got=0 EXT4-fs warning (device loop5): ext4_enable_quotas:7082: Failed to enable quota tracking (type=0, err=-22, ino=3). Please run e2fsck to fix. EXT4-fs (loop5): mount failed